For your protection, your login session will expire in 0:00, do you wish extend your session or logout?
FMCSA - Federal Motor Carrier Safety Adminstration

CSA - Compliance, Safety, Accountability

Working Together for Safety.


SMS - Safety Measurement System SMS - Safety Measurement System

Measure vs. Percentile

Carrier violations or crashes are weighted by time and severity to produce a measure for that carrier in each BASIC. The measure is then used to assign that carrier to a percentile rank containing carriers’ information in similar safety event groups. Expand for more information.

Carrier violations or crashes are weighted by time and severity to produce a measure for that carrier in each BASIC. The measure only considers individual performance based on 24 months of data, with a measure of 0 indicating best performance. The measure is then used to assign that carrier to a percentile rank containing carriers’ information in similar safety event groups. The graph below shows how the carrier’s measure correlates with its percentile rank over a selected period of time.

  • 8
  • 6
  • 4
  • 2
  • 0
  • 0
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90
  • 98
Measure Percentile
0 0
0.04 1
0.04 2
0.05 3
0.06 4
0.07 5
0.08 6
0.09 7
0.10 8
0.11 9
0.13 10
0.14 11
0.16 12
0.17 13
0.19 14
0.21 15
0.22 16
0.24 17
0.25 18
0.27 19
0.28 20
0.30 21
0.31 22
0.33 23
0.35 24
0.37 25
0.38 26
0.40 27
0.41 28
0.43 29
0.45 30
0.47 31
0.48 32
0.51 33
0.53 34
0.54 35
0.56 36
0.59 37
0.61 38
0.63 39
0.65 40
0.67 41
0.69 42
0.71 43
0.74 44
0.76 45
0.78 46
0.80 47
0.83 48
0.85 49
0.88 50
0.90 51
0.92 52
0.95 53
0.97 54
1.01 55
1.04 56
1.07 57
1.10 58
1.13 59
1.16 60
1.19 61
1.23 62
1.26 63
1.30 64
1.34 65
1.38 66
1.41 67
1.45 68
1.50 69
1.54 70
1.58 71
1.63 72
1.68 73
1.72 74
1.78 75
1.84 76
1.89 77
1.95 78
2.01 79
2.06 80
2.13 81
2.18 82
2.26 83
2.35 84
2.44 85
2.54 86
2.65 87
2.76 88
2.87 89
3.01 90
3.14 91
3.31 92
3.48 93
3.68 94
3.92 95
4.19 96
4.57 97
5.05 98
5.87 99
11.32 100